Question

find the relation between x and y if the points A(X,Y) ,B(-5,7) ,C(-4,5) ARE COLLINEAR. if i have left my ans as Y=-3-2XAND X=-3-Y/2 then it is correct or incorrect.

Answer 1

given,
slope of AB = slope of BC
7-y/-5-x=5-7/-4+5
7-y/-5-x=-2/1
7-y/-5-x=-2
7-y=-2(-5-x)
7-y=10+2x
2x+y+3=0
2x+y=-3
2x=-3-y
x=-3-y/2

IT IS CORRECT ANSWER